Supercomputers/Systems/Camphor 1
Japan · operational · hpc
Camphor 1
Also known as Camphor; Kyoto University System A (2012); Cray XE6
Operated by Kyoto University ACCMS .
Phase 1 seed dataset, compiled by hand. These rows were built from public operator, laboratory and vendor sources. A mechanical second-reader pass has since fetched every cited source: 1263 of 1345 systems have a readable citation that names them, and 56 are genuinely weakly sourced. Every claim carries its source and a confidence tier. Treat anything below verified as a lead, not a citation.
Measured performance
- Rmax
- 251.70 TFlop/s
- Rpeak
- 300.80 TFlop/s
- Rmax ÷ Rpeak
- 83.7%
- Cores
- 30,080
- Power
- -
- Per watt
- - GF/W
Figures are as last publicly reported for the configuration described below, not a live measurement. Where a system was upgraded in place, the post-upgrade configuration is shown and the earlier one appears in the timeline.
What this machine is made of
One row per supplier relationship. “Supplier at build” is the company that shipped the part at the time; where that company has since been acquired, the parent it rolls up to today is shown beside it. That distinction is what makes ticker-level aggregation possible across a thirty-year dataset.
| Role | Part | Supplier at build | Quantity | Confidence | Source |
|---|---|---|---|---|---|
| Integrator | - Cray XE6 | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.orgscientific-computing.com |
| CPU | - AMD Opteron 16C 2.5GHz, 30,080 cores | AMD | - | Reported | top500.org |
| Interconnect | Cray Gemini Interconnect 3D torus · About 6 GB/s per direction per link · Around 1 microsecond Cray Gemini interconnect | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.org |
| Operating system | Cray Linux Environment Operating systems Linux, Cray-customised · Proprietary layer over open-source Linux Cray Linux Environment | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.org |
The read
The first Camphor: a Cray XE6 for Kyoto University's Academic Center for Computing and Media Studies. Scientific Computing reported that the centre would receive a 300 TFlop/s Cray XE6 in 2012 and a 400 TFlop/s successor in 2014. TOP500 lists 30,080 cores of AMD Opteron 16-core 2.5 GHz on the Cray Gemini interconnect under Cray Linux Environment, 251.70 TFlop/s Rmax and 300.80 TFlop/s Rpeak, ranked 73rd in June 2012 and last listed 406th in November 2015 (https://top500.org/system/177640/). It was followed by Camphor 2 (2016), already in this dataset. The article does not use the name Camphor, so the link rests on the 300 TFlop/s Cray XE6 match. Reported; no site is recorded.
Timeline
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Change history
- 2026-10-09 Added Camphor 1
Source check
We fetched this system's own citations and recorded whether each page actually mentions it. This is a corroboration signal, not a fact check, and it is published so you can see how well the sourcing holds up rather than take it on trust.
| Cited source | Result | Found on the page |
|---|---|---|
| scientific-computing.com | does not name this system | - |
| top500.org | names system and part | Cray Gemini, Cray Linux Environment |
Checked 2026-10-13 by pnpm verify. Re-run it and the table changes with the web.
Further reading
Operating a supercomputer
Acceptance testing, why "installed" and "in production" are six months apart, and the machine lifecycle.
Inside a node
Latency-optimised versus throughput-optimised processors, NUMA, and the end of the host-to-device copy.
The interconnect
Topologies, why latency and tail behaviour matter more than bandwidth, and how the fabric market consolidated.